<template>
  <div class="home-container">
    <el-container class="home-container-box">
      <!-- 头部区域 -->
      <el-header>
        <div>
          <img
            src="../assets/logo.png"
            alt=""
          >
          <span>电商后台管理系统</span>
        </div>
        <el-button
          type="info"
          @click="logout"
        >退出</el-button>
      </el-header>
      <!-- 页面主体区域 -->
      <el-container>
        <!-- 侧边栏区域 -->
        <el-aside :width="isCollapse ? '64px' :'200px'">
          <!-- 侧边栏菜单区域 -->
          <div class="toggle-button" @click="toggleCollapse">|||</div>
          <el-menu
            background-color="#333644"
            text-color="#fff"
            active-text-color="#409EFF"
            unique-opened
            :collapse="isCollapse"
            :collapse-transition="false"
            router
            :default-active="activePath"
          >
            <!-- 一级菜单区域 -->
            <el-submenu
              :index="item.id + '' "
              v-for="item in menulist"
              :key="item.id"
            >
              <!-- 一级菜单模板区 -->
              <template slot="title">
                <!-- 图标 -->
                <i :class="iconsObj[item.id]"></i>
                <!-- 文本 -->
                <span>{{item.authName}}</span>
              </template>
              <!-- 二级菜单区域 -->
              <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id"
              @click="saveNavState('/'+subItem.path)">
                <template slot="title">
                  <!-- 图标 -->
                  <i class="el-icon-menu"></i>
                  <!-- 文本 -->
                  <span>{{subItem.authName}}</span>
                </template>
              </el-menu-item>
            </el-submenu>

          </el-menu>
        </el-aside>
        <el-container>
          <!-- 右侧内容主体 -->
          <el-main>
            <!-- 路由占位符 -->
            <router-view></router-view>
          </el-main>
        </el-container>
      </el-container>
    </el-container>
  </div>
</template>

<script>
export default {
  data () {
    return {
      menulist: [],
      // 图标
      iconsObj: {
        125: 'el-icon-s-custom',
        103: 'el-icon-unlock',
        101: 'el-icon-s-goods',
        102: 'el-icon-s-order',
        145: 'el-icon-s-data'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
    methods: {
        logout () {
            window.sessionStorage.clear()
            this.$router.push('/login')
        },
        async getMenuList() {
          const { data: res } = await this.$http.get('menus')
          if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
          this.menulist = res.data
          console.log(res)
        },
        // 点击按钮切换菜单的折叠与展开
        toggleCollapse () {
          this.isCollapse = !this.isCollapse
        },
        // 保存链接的激活状态
        saveNavState (activePath) {
          window.sessionStorage.setItem('activePath', activePath)
          this.activePath = activePath
        }

    }
}
</script>

<style lang="less" scoped>
.home-container,.home-container-box{
  height: 100%;
}
.el-header{
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  background-color: rgba(34, 31, 34, 0.815);
  > div{
    display: flex;
    align-items: center;
  }
  img{
    width: 50px;
    height: 50px;
    border-radius: 50%;
  }
}
.el-aside {
  background-color: #333644;
  .el-menu{
    border-right:none;
  }

}
.el-main{
  background-color: rgb(228, 229, 230);

}
.el-footer{
  background-color: rgba(8, 48, 32, 0.774);

}
.toggle-button{
  font-size: 10px;
  line-height: 24px;
  text-align:center;
  background-color: #4a5064;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
